Tinkerbell is Back World of Winx : Season 2 Episode 13

In the season finale, the Winx club fight along side Matt and Tinkerbell to foil the plans of Jim, better known as captain hook. Finally seeing the light, Tinkerbell reverts to her pure form and Matt winx the mermaids onto the side of the Winx. Jim turns the tree of life into a ship and begins to fly it to the world of nightmares to end all dreams forever. Luckily Smee ends up tackling Jim and moves the tree from damnation, unfortunately Jim falls from the ship and plummets into the portal of the world of Nightmares - never to be seen again.